Synthesis of novel 5H, 11H??pyrido [2′, 3′: 2, 3] thiopyrano [4, 3??b]??indoles by fischer??indole cyclization

…, G Primofiore, F Da Settimo, S Salerno…

Index: Da Settimo, Antonio; Marini, Anna Maria; Primofiore, Giampaolo; Da Settimo, Federico; Salerno, Silvia; La Motta, Concettina; Pardi, Gianluca; Ferrarini, Pier Luigi; Mori, Claudio Journal of Heterocyclic Chemistry, 2000 , vol. 37, # 2 p. 379 - 382

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Citation Number: 11

Abstract

Abstract The synthesis of the title compounds 5H, 11H-pyrido [2′, 3′: 2, 3] thiopyrano [4, 3- b] indoles was accomplished by the Fischer indole cyclization of some 2, 3- dihydrothiopyrano [2, 3-b] pyridin-4 (4H)-one phenylhydrazones and 7-methyl-2, 3- dihydrothiopyrano [2, 3-b] pyridin-4 (4H)-one phenylhydrazones. The synthesis of the new 2, 3-dihydrothiopyrano [2, 3-b] pyridin-4 (4H)-one, which was used as one of the starting ...